This cheat sheet can come in handy when working with network addresses and subnet masks. A standard netmask is written 255.255.255.0 which is equivalent to the aggregate /24. Using aggregates has become popular because computer people tend to be lazy and it only requires three keystrokes.
Netmasks and Aggregates | |||
---|---|---|---|
Subnet Mask | 255.255.255.0 | Hex Mask | 0xffffff00 |
Subnet Mask | 255.255.255.128 | Hex Mask | 0xffffff80 |
Subnet Mask | 255.255.255.192 | Hex Mask | 0xffffffc0 |
Subnet Mask | 255.255.255.224 | Hex Mask | 0xffffffe0 |
Network Address | Host IP Range | Broadcast Addresses | |
.128 | .129 - .158 | .159 | |
.160 | .161 - .190 | .191 | |
.192 | .193 - .222 | .223 | |
.224 | .225 - .254 | .255 | |
Subnet Mask | 255.255.255.240 | Hex Mask | 0xfffffff0 |
.0 | .1 “ .14 | .15 | |
.16 | .17 - .30 | .31 | |
.32 | .33 - .46 | .47 | |
.48 | .49 - .62 | .63 | |
.64 | .65 - .94 | .79 | |
.80 | .81 - .94 | .95 | |
.96 | .97 - .110 | .111 | |
.112 | .113 - .126 | .127 | |
.128 | .129 - .142 | .143 | |
.144 | .145 - .158 | .159 | |
.160 | .161 - .174 | .175 | |
.176 | .177 - .190 | .191 | |
.192 | .193 - .206 | .207 | |
.208 | .209 - .222 | .223 | |
.224 | .225 - .238 | .239 | |
.240 | .241 - .254 | .255 | |
Subnet Mask | 255.255.255.248 | Hex Mask | 0xfffffff8 |
.0 | .1 “ .6 | .7 | |
.8 | .9 - .14 | .15 | |
.16 | .17 - .22 | .23 | |
.24 | .25 - .30 | .31 | |
.32 | .33 - .38 | .39 | |
.40 | .41 - .46 | .47 | |
.48 | .49 - .54 | .55 | |
.56 | .57 - .62 | .63 | |
.64 | .65 - .70 | .71 | |
.72 | .73 - .78 | .79 | |
.80 | .81 - .86 | .87 | |
.88 | .89 - .94 | .95 | |
.96 | .97 - .102 | .103 | |
.104 | .105 - .110 | .111 | |
.112 | .113 - .118 | .119 | |
.120 | .121 - .126 | .127 | |
.128 | .129 - .134 | .135 | |
.136 | .137 - .142 | .143 | |
.144 | .145 - .150 | .151 | |
.152 | .153 - .158 | .159 | |
.160 | .161 - .166 | .167 | |
.168 | .169 - .174 | .175 | |
.176 | .177 - .182 | .183 | |
.184 | .185 - .190 | .191 | |
.192 | .193 - .198 | .199 | |
.200 | .201 - .206 | .207 | |
.208 | .209 - .214 | .215 | |
.216 | .217 - .222 | .223 | |
.224 | .225 - .230 | .231 | |
.232 | .233 - .238 | .239 | |
.240 | .241 - .246 | .247 | |
.248 | .249 - .254 | .255 | |
Subnet Mask | 255.255.255.252 | Hex Mask | 0xfffffffc |
.0 | .1 “ .2 | .3 | |
.4 | .5 - .6 | .7 | |
.8 | .9 - .10 | .11 | |
.12 | .13 - .14 | .15 | |
.16 | .17 - .18 | .19 | |
.20 | .21 - .22 | .23 | |
.24 | .25 - .26 | .27 | |
.28 | .29 - .30 | .31 | |
.32 | .33 - .34 | .35 | |
.36 | .37 - .38 | .39 | |
.40 | .41 - .42 | .43 | |
.44 | .45 - .46 | .47 | |
.48 | .49 - .50 | .51 | |
.52 | .53 - .54 | .55 | |
.56 | .57 - .58 | .59 | |
.60 | .61 - .62 | .63 | |
.64 | .65 - .66 | .67 | |
.68 | .69 - .70 | .71 | |
.72 | .73 - .74 | .75 | |
.76 | .77 - .78 | .79 | |
.80 | .81 - .82 | .83 | |
.84 | .85 - .86 | .87 | |
.88 | .89 - .90 | .91 | |
.92 | .93 - .94 | .95 | |
.96 | .97 - .98 | .99 | |
.100 | .101 - .102 | .103 | |
.104 | .105 - .106 | .107 | |
.108 | .109 - .110 | .111 | |
.112 | .113 - .114 | .115 | |
.118 | .117 - .119 | .116 | |
.120 | .121 - .122 | .123 | |
.124 | .125 - .126 | .127 | |
.128 | .129 - .130 | .131 | |
.132 | .133 - .134 | .135 | |
.136 | .137 - .138 | .139 | |
.140 | .141 - .142 | .143 | |
.144 | .145 - .146 | .147 | |
.148 | .149 - .150 | .151 | |
.152 | .153 - .154 | .155 | |
.156 | .157 - .158 | .159 | |
.160 | .161 - .162 | .163 | |
.164 | .165 - .166 | .167 | |
.168 | .169 - .170 | .171 | |
.172 | .173 - .174 | .175 | |
.176 | .177 - .178 | .179 | |
.180 | .181 - .182 | .183 | |
.184 | .185 - .186 | .187 | |
.188 | .189 - .190 | .191 | |
.192 | .193 - .192 | .195 | |
.196 | .197 - .198 | .199 | |
.200 | .201 - .202 | .203 | |
.204 | .205 - .206 | .207 | |
.208 | .209 - .210 | .211 | |
.212 | .213 - .214 | .215 | |
.216 | .217 - .218 | .219 | |
.220 | .221 - .222 | .223 | |
.224 | .225 - .226 | .227 | |
.228 | .229 - .230 | .231 | |
.232 | .233 - .234 | .235 | |
.236 | .237 - .238 | .239 | |
242 | .241 - .243 | .240 | |
244 | .245 - .246 | .247 | |
.248 | .249 - .250 | .251 | |
252 | .253 - .254 | .255 | |
Subnet Mask | 255.255.255.255 | Hex Mask | 0xffffffff |